US2023152A - Cap forming machine - Google Patents

Description

' 1935 G. A. SHAQFFER Er AL. 2,023,152

CAP FORMING MACHINE Filed June 27, 1933 16 Sheets-Sheet 1 INVENTOR'S. GLENN A. SHAF'F'EE FRANK \N .W\RTZ B3.

A TTORNE Y.

1935' G. A. SHAFFER ET AL 2,023,152

' CAP FORMING MACHINE Filed June 27, 1933 16 Sheets$heet 2 I o o O 20/ 66 9 P151. FL.

1 N VEN TOR-s.

GLENN A. ISHAF'F'EB y F'mux gw. Wmrz ATTORNEY.

1935 G. A. SHAFFER ET AL 2,023,152

CAP FORMING MACHINE Filed June 2'7, 1933 16 Sheets-Sheet 5 I87 la /63 0 ATTORNEY.

Deci. 3, 1935. l A, SHAFFER T A 2,@23,152

CAP FORMING MACHINE Filed Jxine 27, 1933 16 Sheets-Sheet 4 INVENTOR8. GLENN A. SHAFFER FFQA IN .WIRTZ BY fl yfiw ATTORNEY.

' 1935 G. A. SHAFFER ET AL 2,023,152 I IN VEN TORS. GLENN A.6HAFFER A TTORNE Y.

Dec; 1935 G. A; SHAFFER ET AL 2,

CAP FORMING MACHINE Filed June 27, 1933 16 Sheets-Sheet 6 INVENTORS. GLENN A. SHAFF'ER y F'RANg .WIRTZ A TTORNE Y.

Dec. 3, 1935. SHAFFER T AL 2,023,152

CAP FORMING MACHINE Filed June 27 1955 I 16 Sheets-Sheet 7 ATTORNEY.

I 1NVENTOR8. y GLENN A. SHAFT-ER y FRAN| 4N HM/RTZ \7 Dec. 3, 1935. Y SHAFFER E 2,023,152

CAP FORMING MACHINE Filed June 27, 1953 16 Sheets-Sheet 8 INVE NTORS. GLENN A.5HAFF'ER ATTORNEY.

Dec 3, 1935..

G. A. SHAFFER T AL 2,023,152

CAP FORMING MACHINE Filed June 27, 1933 16 Sheets-Sheet 9 m5 NE 5 9w 9% INVENTORS. FQLENN A. SCOFFER y R NKL \RTZ I A TTORNE Y.

Dec 3, 1935. G, A, SHAFFER irr AL 2,023,152

CAP FORMING MACHINE Filed June 27, l933 l6 Sheets-Sheet 10 I NVEN TORS. GLENN A. SHAFFER BY FzAuKL g QAMRTZ A TTOR NE Y.

1935- G. A. SHAFFER ET AL 2,023,152

CAP FORMING MACHINE Filed June 27, 1935 16 Sheets-Sheet ll INVENTORS. GLENN A. SHAFFEK y FEANKLJ H.W|RTZ 5 A TTORNEY.

Dec. 3,. 1935. G. A. SHAFFER El AL 2,023,152

CAP FORMING MACHINE Filed June 27, 1953 16 Sheets-Sheet l2 N i 7 Q m 8 ATTORNEY.

y FRANKEQI G. A. SHAFFER ET AL 25023 152 CAP FORMING MACHINE Dec. 3,, 1935.

Filed June 27, 1935 16 Sheets-Sheet 15 IN VEN TORS. GLENN A SHAFFEE ATTORNEY.

By FRANK WIET'Z Dec. 3, 1935. G: A. SHAFFER ET AL 2,023,152

CAP FORMING MACHINE Filed June 27, 1933 l6 Sheets-Sheet 14 INVENTORS GLENN A. sHAFFER. FRANKLIN H. WIRTZ ATTORNEY.

Dec. 3, 1935. G, SHAFFER ET AL 2,023,152

CAP FORMING MACHINE Filed June 27, 1935 16 Sheets-Sheet l5 I N VEN TORS: GLENN A SHAFFEE BY Fe umu \"\.W\RTZ Patented Dec. 3, 1935 UNETED STATES PATENT OFFIQE CAP FORE/ENG MACHINE Application June 27,1933, Serial No. 677,866

16 filaims.

This invention relates to machines for making head coverings such as caps and the like. The machine. is particularly adapted for use in the manufacture of paper caps but it is not necessarily limited to use on any particular material. In actual practice we have found that an all paper cap can be manufactured having the same general appearance as a cloth or linen cap and at such small cost that the actual retail price of the cap is considerably less than the cost of laundering the ordinary fabric cap.

The caps made by the illustrated machine consist of a crown and a band or brim. The band or brim can be fabricated from a roll of paper to give it a stiffening edge and a parafiined. sweat band. The band can be made extensible for different sizes and the crown can be formed from a roll of paper and applied to the band to make the finished cap. The operation of the machine is such that two rolls of paper are used, one for the band and the other for the crown. The paper is folded and cut and the crown and band are brought together, all mechanically without being touched by the operator until the cap is completed.

The novel construction of the machine as well as the several stages of operation will all be described hereinafter, reference being had to the accompanying drawings in which:

Fig. 1 is a front elevation of the machine looking at same from the discharge side.

Fig. 2 is a side elevation of the band embossing, printing, parafiining, creasing, folding and cutting units.

Fig. 3 is a side elevation of the cap forming unit.

Fig. 4 is a vertical section through the embossing roll and paper matrix roll taken on line i 3 of Fig. 2.

Fig. 5 is a transverse section through the form cylinder, platen cylinder, inking rolls and ink fountain taken on line 5-5 of Fig. 1.

Fig. 6 is a transverse section through the male and female creasing rolls on the line 6-6 of Fig. 2.

Fig. '7 is a reduced scale view of the band showing the crease lines which are wider at the following end to fold over the leading or inside end in the forming machine.

Fig. 8 is a side elevation of the folding and unfolding shoes.

Fig. 9 is a vertical section through the folding and unfolding forms on the line 99 of Fig. 8 to show the action of the formers on the paper.

Fig. 10 is a plan View of the cutting head and guide strippers.

Fig. 11 is a side elevation of the cutting head and the guide strippers.

Fig. 12 is a radial section through the wind- 5 ing drum showing a form mold and drive for winding drum. This illustrates the first stage of the forming process.

Fig. 13 is a radial section through the second stage of the forming process showing the 10 mechanism for making the first fold in the band or brim.

Fig. 14 is a radial section through the third stage of the forming process where the second fold is made.

Fig. 15 is a partial vertical transverse section through the crown cutting head and a partial radial section through the mold, vacuum chamber and crown charging and third folding unit.

Fig. 16 is a radial section through the discharge stage showing the completed cap discharged from the mold.

Fig. 17 is a section through the completed cap. Fig. 18 is a section through the band as it passes over the roller showing the band folded to get a good crease or fold.

Fig. 19 is a fragmentary plan View of the creasing rings to obtain the results shown on the band in Fig. 7.

Fig. 20 is a perspective view of one of the creasing arms shown on the band forming head in Figs. 13, 14, 15 and 22.

Fig. 21 is a perspective View of the band creasing and uncreasing guides shown in Figs. 8 and 9.

Fig. 22 is a radial section through the fifth stage of the forming process where the last or fourth fold is made.

Fig. 23 is a longitudinal sectional view through the valve sleeve.

Fig. 24 is an end view of the valve sleeve.

Fig. 25 is a sectional View on the line 2525 of Fig. 23.

Fig. 26 is a sectional view taken on the two section lines 2626 in Fig. 23.

Fig. 27 is a section on the line 21-21 of Fig. 23.

Fig. 28 is a side elevational view of the valve assembly.

Fig. 29 is a sectional view on the line 2929 of Fig. 12.

In carrying out the invention, the paper for the band is fed from a roll, first to an embossing roll, where the paper is embossed to represent linen or other fabric material. It then passes to a printing mechanism where certain indicia can be printed thereon. From the printinder.

ing mechanism the paper passes to paraflin and then creasing rolls. The band is then folded over at its edges to augment the creasing effect.

In the next step the creased edges are unfolded so the band material now lies flat. Then the band material is cut in length. The cut sheets are now intermittently wound on a drum to form a cyl- In this form the cylindrical band is delivered into a mold in a turret, which is intermittently moved about its axis. The first fold of the band is now made, then the second fold is made, the crown is cut and delivered to the band; in the third fold the band is folded over the crown edge, then the fourth fold is made and the finished cap is ejected. These several operations will now be described.

The main frame of the machine consists of three parts, and 2. On is mounted chuck arbor 3, carrying a roll of paper 4. The paper for the band passes from roll 4 to the embossing rolls and 5. he embossing rolls are best shown in Fig. 4. The roll 5 consists of a shaft I, mounted in bearings 8 and 9 in the sides of the frame I. The bearings 8 and 9 are ball bearings and have springs l6 and Ill bearing against them. Through the medium of the springs I6 and H, the adjusting wheels Hi and connected to the adjusting screws l5 and H in the boxes l2 and I3 and the collars l4 and I5 between the adjusting screws and the springs, the tension between the embossing rolls is adjusted.

The shaft 7 of the roll 5 has head plates l8 and I9 between which is laminated material 20 and at one end of the roll is a gear 2| which meshes with the gear 22 on the embossing roll 6, carried by the shaft 23, mounted in fixed bearings 24 and 25. The embossing roll 6 carries a die 26 which cooperates with the soft laminated material 20 to emboss the paper. The roll 5 is driven by a belt 21 on the pulley 28. The paper is shortened by the embossing process. This necessitates driving the embossing rolls with a variable speed drive.

The pulley 28 has a nut portion 29 which can be turned in either direction on the threads 29 to vary the size of the groove formed by pulley portion 28 and plate l3. After the nut 29 is properly adjusted it can be locked in place by the jam nut 3|.

After the paper is embossed it passes to the printing roll 32 which carries an electrotype 33 cooperating with the platen roll 34 to print the paper. The paper is indicated at 4, Fig. 5. The inking fountain 35 and inking rolls 36 may be of any form such as is used in printing presses to supply the electrotype 33 with ink. The paper passes from the printing roll to the paraflining mechanism 31 which consists of a reservoir with parafii-n therein, heated by a burner 38. The receptacle 31 carries a spring supported roller 39 cooperating with a roller 4|] in fixed bearings in the receptacle 3'! so that as the paper passes between the rollers 39 and 40a strip of paraffin is applied to the paper of sufficient width to paraffin the sweat band as will be described more in detail hereinafter. After leaving the parafiining mechanism the paper passes to the creasing rollers 4| and 42, (see Figs. 2 and 6). The female creasing roller 4| is mounted on a shaft 43 which carries a sprocket 44 and a cylinder 45. The female creasing roller 4| carries female creasing rings 46, 41, 48, and 49. These are circular and they cooperate with male scoring or creasing rings 50, 5|, 52 and 53 on the male creasing roller 42. The female creasing roller 4| drives the male creasing roller 42 through gears 54 and 55 and the quill 55 for the male creasing roller 42 car ries a pulley 57 which drives the embossing roll 5 through a belt 27. The pulley 57 with its nut portion 5? and the jam nut 3| forms a part of the variable speed drive to the embossing rolls. The nut portion 57 and jam nut 3| are adjusted in the same manner as the nut portion 29 and the jam nut 3| on the embossing roll 5 are adjusted.

As the paper passes between the rollers 4| and 42 it is scored as indicated at 46', 41, 48 and 49' in Fig. 7. This scoring is provided to give a primary fold or score to the paper 4 so that the edges will fold over easily and after the paper leaves the scoring rollers 4| and 42 it passes over a former plate shown in Figs. 8, 9, l8 and 21. It will be noted that the scoring knives 46, 41, 48, and 4-5 are very slightly spiral so that the scoring lines are slightly wider at the rear end than at the forward end of the length to form band. This is to permit the rear or following end to easily fold over the leading or inside end in the forming mechanism.

Adjacent to the scoring rolls is a bracket or brace 59 which carries a plate 53 adjacent to which are guides or folding shoes GI and 62 so that the sides 53 and 64 (see Fig. 9) of the paper 4 will be folded up on the score lines and after the paper moves over the roller 55 it passes over an unfolding guide or head 55 so that when the paper leaves the head 65 it is again flat. The paper then passes under the roller 51 and between the rollers 68 and 59. The roller 68 carries a knife 15 which coincides with a groove H in the measuring roller 59 so that the paper can be cut into lengths at this point and then pass on to the chute or guide 72 having guide rails 13 and 14 which hold the advanced sheet true, through the medium of the linkage i5, 16, TI and the arm 18. The link '|6-18 is pivoted to a support at 15 and the links 15 and H are connected to the rails 13 and 14 at 19 and 8|). A cam 8| moves the rails '13 and 14 to align the paper on the guide and to release it so that it can be wound true on the cylinder forming roll 82, which is in reality a mandril having a complementary roller 83. The mandril 82 winds the flat sheet around it to form a cylinder using a vacuum to hold the sheet to the cylinder or mandril 82. The band is now in cylindrical form so ready to be fed into the .molds of the turret through the successive form operations to complete the cap. It should be stated here that the mandril drum has a hollow shaft 84 connected to an exhauster through the hollow support 85 and the opening 85 in the conduit 81. The conduit 8? is connected directly to the eXhauster and when the mandril 82 moves into the mold |24 it carries the band held in place by vacuum until valve 84 strikes stop it which cuts off the vacuum and releases the band from mandril 82. At the same time valve I54 is opened and a vacuum holds the paper band to the sides of the mold in the turret. This will be explained more in detail hereinafter. The scored cylindrical band is now ready to be acted upon by the first folding head. The member H3 is reciprocated back and forth by the link 89 connected to the elbow lever 95 operated by the pitman 9| which is connected by a wrist pin 92 to the disc 93 on the shaft 94. The shaft 54 is driven through a series of gears by the motor 95 which has a belt drive 56 to drive the pulley 9'! adapted to be clutched to the shaft 98 by the clutch 99. The clutch 99 may be thrown into and out of engagement by an appropriate hand lever or foot lever as the case may be. The shaft 98 carries a flywheel 98' and a gear IIIIJ which drives a gear IIlI on the shaft I02. The shaft I62 rotates the arm I93 for the Geneva motion which engages on the slots I04 of the Geneva wheel I05 to rotate the gear I636 on the shaft IIII. The gear I66 meshes with the gear I08 on the turret IEIS mounted in the frame. On shaft I02 is an intermittent gear III! which meshes with the intermittent gear III to drive the shaft 9 3.

The gear Hi8 meshes with the elongated toothed gear IIZ carried by the head casting I13 and it drives a shaft I I4 in the bearing I I5. The shaft II i carries a gear IIB which meshes with the gear I II to rotate the hollow shaft 514 which drives the mandril 82. By referring to Fig. 12 it will be observed that there is a stop H8 to operate valve 84 in one direction and a stop II9 at the back side of the plate I45 to operate valve 84' in the other direction. The head I It in addition to carrying the cylinder forming mandril roll also carries a head or paper forming and creasing member I2Il to perform the first folding action, and another head IZI to perform the second folding action. A bracket I22 on main frame I, carries sliding rods I22 and I22 on which are mounted the gauge heads I22 and I23. (See Fig. 1.) The heads I22 and I23 are moved into the molds by compression springs I23 and I23", pressing against bar I23 which is fastened to bars I22" and I22. Mounted on head H3 is a retracting bracket I I3 for pushing the gauge heads I22 and I23 out of the molds I2? and. IE8 at the last part of the outward stroke of the head II3. These heads are received in corresponding forms or molds I24, I25, I26, I21 and I283. The band receiving form of mold I24 shown in Fig. 12 receives the band from the mandril 82 and it is provided with openings ISI, IBI, I32 and I32 at its respective ends which communicate with the chamber I 33 of the valve sleeve I33. The chamber I33 is connected to the exhaust conduit 81. The ports or openings I3I, ISI, I32 and I32 are adapted to be closed or rendered ineffective by the valve I 34 on the stern I35 connected to the rocker arm I36 (see Figs. 1 and 12) said rocker arm being actuated by a cam It? on the gear III! and also by the hub II3 striking the valve I34 on the inward stroke of the head casting H3. The valve operates to permit the eXhauster to hold the band in the form I24 when the valve I 34 is open and until the mandril 82 moves back to the position shown in Fig. 12. This is to prevent the mandril 82 from pulling the band back out of the form I24 and to insure the band being carried to the next stage to be acted upon by the first folding head I25.

It is to be understood that when the heads and the casting IIS and I12 reciprocate on the hollow conduit 81 and H5 that all of the forming members move with them and that the vacuum holds the band in the forming molds during the various operations of forming the cap.

After the band is introduced into the first mold and the mandril is retracted, the Geneva wheel moves the turret around one step so that the first head I28 is ready to make the first fold (see Fig.

13). The head I29 is mounted on a hollow shaft I38. It consists of a sliding block I39 having stops I46. The sliding block I39 is held on the hollow shaft I38 by a collar MI A series of outstanding rollers I42 are carried by the head and about these rollers are fingers I43. As the head moves forward the fingers I43 engage the paper and together with the fingers I4I' the first fold the molds.

is made as shown in Fig. 13. As the head advances into the mold stops I40 contact with the stop plate I59 and the block I39, fingers I43 and pin I56 stop moving and are held in position by tension spring I57. Fingers I4I' are kept in motion and finish the fold started by fingers I43. The yielding pin I56 in the slot I55 retracts the shaft I41 tilting the arms I48 of the creasing members I49 shown in Figs. 13 and to crease the fold against the sides of the mold I to lay the fold flat. It will be noted that the creasing members (see Fig. 20) consist of arcuate heads I58 with right angular shanks IEI to which the arms I48 are connected and that the arms are pivoted at I52. The spring I53 in the cup like collar M5 is provided to prevent breaking of the creasing members i 59 if paper or some other obstruction should come between the member I49 and the sides of the mold. The compression spring I53 rests against the collar I54 and exerts a pressure against the cup shaped collar I46 to retract the creasing member I49 on the return stroke or as soon as pin I55 leaves the end I55 of slot I55. The pin I56 is rigidly fastened to the sliding block I39 and passes through a slot in the hollow shaft and through the slot I55. The movement of block I39 when stops I40 strike stop plate I59 causes the pin I56 to move to back end of slot I55 where it becomes effective to operate the creasing members I 49. Compression spring I57 returns the block I39 back to its original position ready for next cap.

After the first fold is made the heads H3 and I72 with the other heads are withdrawn from The Geneva motion now moves the turret one step so that the band which has been acted upon to make the first fold is carried opposite the head I2I which can now move into the mold to make the second fold as shown in Fig. 14. The out band 4' is now in the mold and the second fold is made. The head I2I corresponds in detail to the head I29 except that the stop member 5% is shorter allowing the head I 2| to go farther into the mold. Since the construction of the heads are practically the same, corresponding numbers have been given the corresponding parts on all heads so as to shorten the description. After the second fold has been made the top band portion of the cap has been completed. The mold now moves to the fourth stage, that is, the crown-applying stage, where the crown is applied and the third fold is made. The paper for the crown is fed from a roll I60 up to the idler IfiI, under the friction roller I 62, between the cutting rollers I63 and I64 where the paper is severed into lengths due to the fact that the knife I on roller I63 coincides with a groove I56 on the roller I54. The severed paper is fed down the guide or chute I67 from between the rollers I54 and IE3 to the rollers I69 and III across the flared ring I'II where it is introduced into the back side or rear side of the mold. In order to effect the introduction of the crown sheet into the mold, a sliding bracket head "2 is provided, similar to the head I I3. It carries a crown sheet introducing head I95, a folding and creasing head IZI, and an ejector head 208 in proper spaced relation. The bracket head In is supported on a tubular support I15 and it is reciprocated through the medium of the pitman I16 connected to the wrist pin III on disc MB on shaft 94 which operates the elbow lever I19, driving a link I88 connected to bracket head H2. The arms I8I, I82 and I83 carry the members I95, IZI' and I14 in radial spaced relation so that they are in position to function with the respective molds. The sprocket I 84 on shaft I02 drives a sprocket I85 through the chain I86 (see Fig. 3) which, through a bevel gear I81 drives shaft I98 on which roller I64 is mounted. The cutting roller I93 is driven from shaft I88 through the gears I 39 and I95. The roller I is driven from shaft I89 through the sprockets I 9| and I92 connected by chain I93 (see Fig. l) and shaft I88 has a crank I9 3 by means of which the feed rollers can be turned by hand for initially feeding in the crown sheet paper and in order to permit this the drive from the main machine can be thrown out by a clutch of appropriate construction not shown. When the bracket head I12 is moved toward the center of the mold a crown introducing band I95 on head I73 (see Fig.

forces the sheet into the band already in the mold so that the crown I96 is within the band and the head IE3 which corresponds to the head shown in Fig. l l folds over the rear edge of the band so that the free edge of the crown is received in a fold in the rear edge of the band. As the bracket I72 recedes from the mold the Geneva motion advances the mold to a position opposite the head I2I', see Fig. 22, the head I2I' corresponding to head shown in Fig. 14, makes the second crown securing fold so that the cap is now formed as shown in Fig. 17.

It will be noted that the gauge heads I22 and I23 prevent the heads I2I and I13 from pushing the band out of the mold when the crown is being inserted. (See Figs. 1 and 15.) The movements of the heads on the brackets I I3, I22 and I72 are synchronized so that they will move intoand out of the molds in proper co-relation. After the cap is formed so that the rear edge of the band has a double fold over the free edge of the crown I96 with the band I99 fast to it as shown in Fig. 17, the cap is ready to be ejected from the mold I29. This is effected by the ejector plunger I'I I having a head 200 which is introduced from the rear of the mold to eject the finished cap out upon the table I30. The ejected cap is round and it may now be collected and pressed flat ready for packing.

The second and fourth operation shown in Figs. 13 and 15 are identical except that one is on one side of the turret and the other is on the opposite side and that in the fourth operation the head I72 carries the crown introducing band I95 to push the crown in place and instead of the element MI in Fig. 13 the element I I3 is used in Fig. 15 for the fourth operation. The third and. fifth operations are identical as shown in Figs. 14 and 22 except the mechanism for the fifth operation is on the opposite side of the turret with respect to the mechanism for the third operation.

The second, third, fourth and fifth operations are very similar so far as parts and function are concerned and attention is called to the fact that the fingers 43 bend the part of band to be folded toward the center about 45 degrees to hold the part of the band to be folded in this position while the parts I H and I13 continue on carrying the part to be folded to cause it to lie flat against the mold or matrix. Then the part I69 presses the fold fiat, the rollers I42 at this time being of asistance in rolling the folds and crown down preliminary to completing the fold.

In describing the invention we have attempted to carry through the operation from the beginning to the end of the cap manufacture, under the assumption that the band is first'introduced into the mold I24 and that the various steps are progressively carried out through that particular mold in order to show the sequence of operation but it is to be understood that the molds I24 to I29, both inclusive, are all duplicates and 5 that there is one operation taking place in each mold simultaneously with different operations in the remaining molds so that when the machine is operating some stage of cap manufacture is taking place in each of the six molds or cylinders 10 in the turret so that every time the bracket heads I I3 and I12 operate through a cycle a finished cap is being ejected from the mold or cylinder I29.

From the foregoing it will be aparent that two 15 rolls of paper, one for the band and one for the crown, will be fed through the machine, out and folded in proper stepped relation so that a finished cap can be mechanically manufactured therefrom. The creasing, printing, cutting and feeding rollers for the band can be driven by a chain 29I which is driven from the sprocket 202, keyed to shaft I02 (see Fig. 2) Any other form of drive, however, may be substituted. The friction plate 293 pivoted at 204 (Fig. 2) rests against the roll 4 to hold the paper against slack.

It is to be noted that the valve sleeve I33 is stationary and acts as a journal for gear hub I98 and that the gear hub I08 is a part of the valve as well as a bearing for the turret.

It is to be further noted that there are six steps in the turret process as follows; charging, first fold, second fold, crown charging or third fold, fourth or final fold and discharge by the ejector through opening in plate I59 to the table. The reference numerals 205, 296, 20'! and. 208 designate annular chambers in all of the molds of which there are six in number all mounted on gear I98 and gear hub I08. These chambers communicate with segmental grooves I3I, IEI, I32 and I32 through holes ISI, I3I, I32" and I32 as shown in Fig. 29. 209, 2I0, 2H and 2I2 are valve ports leading from annular chambers 295, 205, 25'! and 208 to the chamber I33 of valve sleeve I33. The valve sleeve I33 is provided with segmental grooves 2I3, 2M,

2 I 5 and EI 5 which have perforated Walls to communicate with the vacuum chamber I33. When the parts are in the position shown in Fig. 12, station 1, all annular spaces 295, 206, 201 and 298 are closed off from the chamber I 33 by the valve I94. When the mandril 82 moves into the mold I20 the hub IISf strikes valve I34, opening it and at the same time valve 84 is closed by the end striking against stop II9. This step transfers a cylindrical sheet of paper from the mandril 82 to the mold I24. When the parts are in the position shown in Fig. 13, station #2, all the grooves are under vacuum. When the parts are in the position shown in Fig. 14, station #3, the annular space or chamber 205 is closed off from vacuum chamber I33 of sleeve 5 33 and at station #4, Fig. 15 the same condition prevails. Station No. 5 is shown in Fig. 22 and it will be noted that the annular spaces 205 and 5 298 are closed off from vacuum chamber I33.

When the parts are in the position shown in Fig. 16, station #6, all the annular spaces are closed off so that the hat can be ejected. The closing of the different annular spaces is due to the fact that the segmental grooves in the Valve sleeve or member I33 are of different lengths or areas as will be apparent by reference to Figs. 25, 26 and 2'7.

Various changes in form, proportion and minor

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